Mainframe COBOL Technical Interview Questions

12/19/2009 No Comment

COBOL Technical Interview Questions. 

Please use the comment section for answers.

  1. Explain how do you do to resolve SOC-7 error in COBOL?
  2. What is the difference between COMP & COMP-3 ?
  3. Explain what is the difference between SEARCH and SEARCH ALL ?
  4. What is the difference between index and subscript ?
  5. Explain how is sign stored in a COMP field and in a comp-3 field ?
  6. Can you redefine an X(100) field with a field of X(200) in COBOL?
  7. What does EXIT do in a COBOL program?
  8. What is the difference between CONTINUE & NEXT SENTENCE in COBOL?
  9. In COBOL, when would you use in-line perform ?
  10. Explain what is the difference between performing a SECTION and a PARAGRAPH ?
  11. What should be the sorting order for SEARCH ALL in COBOL?
  12. How will you define a Table/Array in COBOL ?
  13. Is it possible that the REDEFINES clause has different picture clauses compared to the one it redefined?
  14. Explain what are the different forms of EVALUATE statement in COBOL?
  15. Explain how is sign stored in Packed Decimal fields and Zoned Decimal fields in COBOL?
  16. What does the IS NUMERIC clause establish ?
  17. What is the purpose of 77 level, why it is used in COBOL?
  18. In COBOL,  what does the INITIALIZE verb do ?
  19. What care has to be taken to force program to execute above 16 Meg line ?
  20. What does a status return code of nn29 mean in relation to record locks in COBOL?
  21. What do you mean by Area Sweep and when is it used?
  22. Why would you use find and get rather than an obtain?
  23. If you are current on the owner of a set, what is the difference between an obtain next and obtain first?
  24. How can you can read the file from bottom in COBOL?
  25. Explain what is the difference between SEARCH and SEARCH ALL What is more efficient ?
  26. Why do we code s9 (4) comp in spite of knowing comp-3 will occupy less space ?
  27. What is the Purpose of POINTER Phrase in STRING command ?
  28. What divisions, sections and paragraphs are mandatory for a COBOL program ?
  29. Explain what is the difference between Structured COBOL Programming and Object Oriented COBOL ?
  30. How do you submit JCL via a Cobol program ?
  31. What is the different between index and subscript in COBOL?
  32. What do you feel makes a good COBOL program ?
  33. What is the difference between static call & Dynamic call in COBOL?
  34. Can you provide some advantages of REDEFINES clause in COBOL?
  35. Explain how would you execute a set of JCL statements from a COBOL program ?
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